Hatch fastener



F. WL WATSON.

HATCH FASTENER.

APPuc/mon man rss. 12. 1921.

unirse stares narrar ortica.

liiianiiiaieicii w'.- wArrsoN, or CLEVELAND, oHio, AssrGNon To Tian MULHOLLAND HATCH inasfrriisniaV COMPANY, oFcLEvELANn, oirio, CORPORATION orl OHIO;

- HATCH -rAsrENEa y Specfication'of Letters Patent.v Patented. 1S, 1922, y

Application inea rebmafy' 12,l i921.l 'serial No.' 444,580.

TO all whom/t may concern.'

Be it known that I, FREDERICK W. VAT- soN, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented new and useful Improvements in Hatch Fasteners, of which the following is a specification, the principle of the invention being herein eX- plained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to hatch fasteners, and particularly to an improvement upon the structure of this nature shown, described and claimed in U. S. Letters Patent No. 1,126,064, patented to'Mathew Mulholland upon January 26, 1915.

. Theannexed drawing and the following 'description set forth in detail certain means` embodying my invention, the disclosed means, however, constituting butv one of the various mechanical forms inwhicli the prin-` ciple of my invention may be applied.

.In said annexed drawing Figure 1 represents a front elevation of a hatch fastener embodying my invention, showing a fragmentary portion of the deck,

.hatch-coaining and hatch-cover; andV Figure 2 represents a vertical section, partially in' side elevation, of the elements shown in Figure 1.

Referring to the annexed drawing, in`

which the same ordinals refer to the same parts in the two figures, a clamp is indicated by the ordinal 1 having a head portion 4t and a tail portion 15. A bracket'se cured to the coaming 10 in any desired :fashion is indicated by the ordinal 2, the same having an exteriorly threaded eXtension 7. The tail portion 15 of the clamp 1 encircles the bracket by means of a hole (3. Rotatably mounted upon the bracket por- -tion 7 and engaging the threads thereof by means of a threaded bore, is a fastening member 3. The inner end of said fastening member 3 is enlarged and formed with an integral conical surface 8. The clamp 1 is formed with an outwardly and downwardly inclined conical surface 9 having a degree of inclination the same as that of the surface 8. Said surface 9 is located in a positionsuch that when the clamp 1 isv loose, the rotation ofthe fastening member 3 will cause the surface 8 to engagev the surface 9, and further rotation will pull the elampl downwardly on to the hatch cover 5, thereby effecting the desired clampin ofthe tarpaulin 12. Y The clamp 1V is so formedv that it mayalso secure between it and thek coaming 10 the'batten 'strip11, this securing being effected/'when 'therfastening member 3* is screwed inwardly, causing the clamp 1 to move inwardly, as well vas downwardly, as

will/beV understood. Thetarpaulin 12 also extends between the batten 11 and the coam- -ing 10.

VThe features' hereinbefore described are well-known, and for cooperation with these standard features I have designed the improvements which I shall now describe in detail: Due to several varying conditions, the pressure of the fastening member 3 upon the clamp 1 is such as toV swing the tail portionl 15 vof said clamp further inwardly than -is proper for effective clamping. In order to obviate this diiiculty` I vform the extension 7 of ythe'bracket 2 with a pair of downwardly extending` and divergentr abutabuts the coaming 10. By this construction it isl possible adjustably to limit the inner movement of the tail portion 15 0f the clamp, and thus kprovide for any unusual conditions which would not adequately be met by the provision of the abutments or stops 13.

What I claim isi 1. In a hatch fastener, the -combination of a clamp having a clamping head and a tail portion; a fixed bracket; a vfastening member movably mounted on said bracket and adapted to engage and apply pressure to an intermediate portion of said clamp; a stop for limiting the movement of the tail portion and providing a fulcrum point about which the clamp is adapted to be swung by said fastening member; and means independent of said fastening member for relieving the pressure on said stop.

2. In a hatch fastener, the combination ot' av clamp having a ciampingb` head and taiiportion; a `tiXed bracket; 'fasteningr member movabiy mounted on said bracket and adapted to engage an intermediate portion otI said clamp; and stops fordimitvsaid bracket and engageable with said tail portion of the clamp grand an adjustable sto p member mounted upon the `end ont the tail .portion of the clamp. Y.

ing the movement of the taii portionl and 5 4. n 'a hatch fastener, the Vcombination of aclamp havinga clamping head and tail portion; a fixed bracket; e fastening.

member movably mounted on said bracket and adapted to engage4 anV intermediate portion of said clamp; and an adjustable stop member mounted upon the end of said tail portion to provide a fuicrum about which said clamp is adapted to be swung by Said fastening` member. v Y Signed by me this 9th day o-LFebruary, 1921. j

F. 1 W. WATSON. 

